Shearing-machine.



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110.877,51?. Mmmm JAN. 2s, 190s.

c. M. PALMER'. mf

SHEARING MACHINE. ff; APPLICATION FILED 822134, 1908.

U N ITED STATES CHESTER M. PALMER.,

BEARING-MACHINE.

'4 To ail whom it may concern:

Be it known that I, CHESTER M. PALMER, a

I citizen of the United States. of Aurora, in the county of Kane andState of Illinois, have in- :J 5 vented certain new and useful Improve-'ments in Sliearing-I\Iacl1ines and I do hereby ff declare that thefollowing is a full, clear, and ,Lf exact description, thereof,reference being had j to the accompanying drawin s, and to the*'lcjletters of reference marked t ereon, which hilforrn a part of thiss ecication.

e This invention re ates to improvementsin -=ehearin machines forshearing or clipping I the woo of animals, and the invention conl"sistsin the matters hereinafter set forth and K `:Iriore particularlypointedout in the appendclaims.

fAmong the objects of the invention is to se? improve the pivotalconnection of the vibratory cutter lever with the frame; to improve thetension device by which proper tension ofthe cuttingknife is maintainedon the guardziingers or comb of the frame; to pro- ,#vide" an 1m rovedconnection between the isetter and tne vibrator-y cutter lever, and torovjide an improved construction of the 'art' of the casingr whichaffords bearing for he driving shaft of the machine. Other ob- 'Iectsofthe invention will appear from the` i ho xeg'oing description. :Elda thedrawings: Figure 1 is a plan view of eering'machme-made in accordancewith fmyf invention. Fig. 2'is a longitudinal, vertical-.sectionthereof. Fig. 3 is a section, akenn line 3*-3 .of Fig. 2, lookingforwardly. "Fig: 4 is a section, taken on line ofFig. 2, lookingrearward] Fi 5 is section, takenon line 5-5 of Fig. 4500i:-.wQmg-downwardly. Fig. 6 is a perspective tjlvyiew of the postconstitutin the pivot for t-thevibratory cutter lever. ig: 7 is alongiudinal view, similar to Fig. 2 showing a inodiied form of thevibratory cutter lever.

shown in the drawings, A designates, as f l 'awhole the casing whichconstitutes the slffframe of the machine, com risin a top Wall a, abottom wall a* and si( e wals a'. Rig- *Ffidlyconnected with the casinis a tubular extension B consisting of a tube aving screw- Q; threadedconnection at its front end with the flrear'end of the casin Said tube Baffords bearing for the driving shaft C of the ma- ,f chine. The drivingshaft is provided at its :rear .end with a gear c which meshes with-LSpecication of Letters Patent.

Application tiled September 4. 1908. Serial No. 333.120-

PATENT OFFICE.

Patented Jan. 28, 1908.

l through the medium of which ower to operate the cutter is transmitted)to the machinef The said shaft D is mounted in a tu- I bular casing Dlthat has-a hollow or bell- 60. shaped end d* inclosin the gear d andsuitably connected wit a like bell-shaped part b of a sleeve b* lthat isslipped over the rear end of the bearing tube B. The bearing i tube Bconstitutes the handle of the machine, 65 and is, in practice, coveredwith a suitable leather cover, which overlaps the rear end of the frameA and the front end of the tubular casingD. A E designates the vibratorycutter lever .70 or fork which carries at its front end the'-. cutterEl, and is mounted on a 'pivot post 'L F, which latter isdispcsed'transversely to :"i the axis of the shaft C, and 'is rotativelymounted so as to have rocking rnction'iirzsl upper and lower bushings a3a* having screw- L. threaded connectionswith-the u per and. lower wallsa a1, respectivel of t e frame if'. A. The cutter carried by t e forwardend'l." of the lever, is provided with teeth e and has 3u vibrator-yengagement with the teeth of a comb or guardlate G, which latter isf-f'attached to the gottom wall of the casing A, as by means of screws g.Said cutter lever E is rovided at its rear end with a vertical soc et Ein which o erates a ball- 'f" bearing crank c extending orwardly andeccentrically from the forward end of the Y., driving shaft C, wherebyvibratory motion is given to the said cutter lever and the cuttercarried thereby, through the rota action of said shaft. In accordanceone feature of my invention, the said cutter f .Ex is not carrieddirectly by the cutter lever, -but an intermediate late H, attached tothe lever by means o a screwh, is interposed between said lever andcutter. As 1 erein shown, the lateral members or arms. e1 el of the.vibratory cutter lever are apertured and screws or studsv e e extenddownwardly throu h said apertures and'f' have screw-threade enga ementwith said 17"., L arms and extend also t ough apertures I- in theintermediate sprin or resilient plate H, as shown in Fig. 3. .ihe saidscrews e are provided with downwardly facing conical shoulders e e (Fig.3) which oppose up wardly facing conicalshoulders surroundings.;- theapertures of the intermediate or spring plate, and thelower ends of saidscrews are i5"gear 'd of a shaft D that is adapted for con? ,nection.with a Yflexible shaft, not shownnd -.cylindric and engage .said opeCutter. partsareprefera ly so arranged: 5in.;

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that the arms of the cutter lever do not bear directly on the sprin orintermediate plate. The said interme iate spring-plate H. 1s providedwith forwardly extending lugs 5 or arms h, there being a number of sucharms equal to the number of teeth e of the cutter, one arm bearing oneach tooth. This arrangement insures a uniform bearing Vof the cutter onthe gua'rdlate, notwith- D standing inaccuracies of fit ue to wear orother cause; the. resilient action of the intermediate spring-plateinsurin that the said arms of the plate will act wit uniformity toevenly press the cutter on the guard- 5 plate or comb. Furthermore, theflexible or loose connection of the intermediate plate with the cutterlever through the screws e, which also constitute the connection of thecutter with said cutter lever permits the arms of the lever to have aslight pivotal action on the plate, which cooperates with the resiliencyof the plate to apply the tension device pressure on the cutter in amanner to insure uniform cutting i action of the teeth on theguard-plate.

Another function of the interposed resilient plate H between the cutterand vibratory cutter lever is that, with the same vibratory cutterleverI resilient cr spring-plates of different dimensions may be used inconnection with different sized cutters. For instance, a plate designedto be used in connection with a cutter having but three teeth may beemplo ed with the same advantageous effect, and7 this effect is producedwith only the replacement of the spring-platesand without the necessityof replacing the cutter lever itself. lf a cutter having three teeth beelnployed the spring-plate H interposed between the cutter lever and thecutter will be provided with but three bearing lu or arms h whichengage'the blades of sai cutter. A further advantage of this arrangementis that, the pressure exerted on said vibratory cutter lever to hold thecutter on the comb or teeth does not tend to break said lever and shouldsuch ressure tend to injure the projections h o the resilient plate,which bear directly on 'the teeth of the cutter, the plate H only needto be re laced. The tension exerted on said cutter ever to maintain thecutterin proper 'relation to the teeth of the comb or guard plate iseffected through the pivot post F an the construction and arrangement ofthe parts are such that the post, which carries the vibrato y cutterlever is maintained at all times at the same an le to the cutter leverand all the tension a p led thereto is exerted on the front end of t elever to hold the cutter against the guard-plate or comb, while the rearend-of the lever 1s free from engagement with a-friction surface. Theconstruchon of the cutter lever 1s freeto rock slightly on itslongitudinal;r to permit ad'ust' it to properlyitself and the cuttercarried thereby to main tain a uniform contact of the cutter with theguard-plate. The construction of said pivot post and its relation to thevibratory cutter` v ever and tension device will now be describedm Thesaid pivot post F, which is; shown in F ig. 6 as detached from thecasing, comprises upper and lower cylindric portie-.ns f f l which haverotative bearing, respectively, with the bushings a3 a* before referredto and extends 75 throug averticalo eninginsaid cutter lever. The postis rovirllad mediate its ends with a downward y facing sphericalshoulder f" which engages and bears downwardly on an upwardly facingcomplementary socket e in the vertical aperture of the cutter-lever E,as more clearly shown in Figs. 2 and 4. The post is also provided withone or more fiat earing surfaces herein shown as formed on a flange f.he said flat surface of the 35 post is designed to engage an o posinghat surface e4 on the upper face of t e lever, as herein shown, for apurpose hereinafter'tobe described. I desi nates a tension screw thatextends 9o j? into an has screwthreaded engagement with the upperbushing a. and bears at its lower end on the upper end of the cylindricportion f of the pivot post. Said tension screw is provided with aknul-led headt and the under face of the head is rovided with a Iplurality of lugs 'il between w 'ch are formed notches that are adaptedto be engaged by the end of'a locking spring J attached to the fil frameof the machine. l`he tension screw 109 operates through its engagementwith the upper end of the pivotost, together with the engagement of thesp ierical portiongfl of the post with the com lemental socket e in thecixtter lever and t e engagement of the flattened surface f3 of the postwith the flatl tened surface or shoulder e on the cutter ,A lever, topress the cutter lever and the cutter f downwardly. By reason of theengagement 1 of the post at two separated points with the 1105. f lever,to wit,the engagement of the sphef. ical shoulderj' withthe sphericalsocket of the lever and the engagement of the flattened i surface withthe opposing surface e* on the lever, t e lever as it 1s presseddownwardly 115, by the tension screw I maintains afixed angle to thepost, and the tension screw acts, t. through the lever, to press thecutter on the .Y guard-finger, but does not press the rear end of thelever a ainst an opposing part o f the bottom wall o the casing. Whilethe cutter t." lever, when thus pressed downwardl by the tension screw,maintains a fixed an e to the- 7. post for the reason set forth, yet thespher-j icaiengagement of the post and lever permits 1.25' a slightrocking movement of the lever on its t parts, howeverz is such that the]longitudinal axis to permit the cutter carried by the. lever to properlyadjust iself to the guard-plate or comb, and suchslight rocking mengrientmof the leveris not e'ected byz-en- "130 gagement of the ilattenedshoulders j`-l e* on the post and lever, respectively, because saidsurfaces are free to slip or oscillate one upon the other. The sameresults will be secured if 'the relative iositions of said spherical andflattened shoulders of the post be reversed and their contactingsurfaces or shoulders on the lever be likewise reversed. A plurality offlattened portions j may be iro'. ided on the post to enable the post,which has only a limited rotativ e mov ement in each reciprocation ofthe cutter lev er to be partially turned as it becomes worn to presentnew bearing surfaces of the parts fj" tothe bushings a. a, therebylengthening the elfcctiw e life of the ost.

T ie provision' of the upper and lower bushings aa a* of the casingpossesses the important advantage that when said bearings are worn `soas to aiiect the alineincnt of the ost, this defect may be readilyremedied liy merely replacing the bushings, thereby avoiding thenecessity ofreplacing the more expensive casing or frame A, which would25 occur in the event that' the post had direct 'rotative engagementwith t le apertures in the upper and lower walls of the said frame.

The arrangement whereby the sleeve in which the driving shaft C hasbearing, is made separate from the casing A and has suitable detachableconnection therewith, is advantageous inasmuch as it provides anexceedingly simple and durable )caring and one which enables one of theparts to be readily and economically replaced in case of wear, or injuryof the other part. The said shaft is reduced, as indicated at b2, toprovide an oil chamber within the bearing sleeve or casinur B, and saidcasing B is provided with an oil 'opening that is closed by a suitablescrew b (Fig-.2).

In Fig. 7 I have shown a. modification of the tension device and thevibrato cut ter lever, wherein the spherical shou der fz shown in theother figures is replaced by a flange which engages a recess in theupper face o said vibratory cutter lever. In order to afford the even oruniform adjustment of the forward end of the vibratory cutter lever onthe cutter, I make such lever in two parts connected by a screw etherebv permitting the forward end of said lever to lave a slightrocking movement to adjust itself, relative to the rear end of the leverarm as occasioned b the demands or requirements of the fit o the forwardpart of said lever and its interposing spring-plate H upon the cutter.In other respects, the machine shown in Fi is like that shown the otherfigures arts are-designated by the same A spring K herein shown as aspiral sprln A.and surrounding the post F, is interpose Between thecutter lever and the bottom wall of the casing for the purposeofpreinghs lever away from the bottom wall of the cas-A ,l ing andautomatically releasing the cutter when the tension device is released.I claim as my inventioml. In a shearing machine, the combination with acasing, a guard-plate and a cutter movable on said guard-plate, of avibratory cutter lever, a pivot post having rotative bearing in theupper and lower walls of said casing and non-rotatively engaginv'between its ends said lever, means for applying tension to said leverthrough said post, means whereby the lever and the cutter carriedthereby may have' a slight rocking movement with respect to the post topermit uniform pressure of the cutter on the guard plate, and meanswhereby a fixed angle beh tween the post and lever is maintained, in?cluding a flat bearino' surface on the post which has sliding bearingwith the lever. 2. In a shearing machine, the combination with a casing,a guard-plate and a cutter l, movable on the guard-plate, of avibratorjr lever for operating the cutter, a post extend ing through anaperture in said lever and having rotative bearing in the upfer andlower walls of the casin means for vibratin said lever, a tension eviceacting througi the post on the vibratory lever for pressing the cutteragainst the guardlate, means for effecting even pressure of t e cutteron' the guard-plate, and means for'maintainin the post at a fixed anv'leto said lever, incluf ,I I. ing a fiat surface on tiie post engaging acon1- f' plementai surface on the lever. y

3. In a shearing machine, the combination- '1 with a casing, a guardlateand a cutter movable on the guard-p ate, of a vibratory 1 cutter lever,a pivot post having rotative bearing at its ends in the casing andengaging between its ends said lever, andl means for applying tension tosaid leverd through said post, said post having an oscillating andsliding engagement with the lever at vertically separated points, forthe`pu 119, pose set forth. 4'. In a shearing machine, the combinal tionwith a casing, a guardplate, and a cutter movable on the guardate, of avifbratory lever carrying at its iii-ont end said cutter and free frombearing contact at its rear end with the casing, a pivot post havingbearing in the upper and lower walls of the' Af casing and engagibetween its ends said lever, means for app tension to the lever throughsaid post, an means whereby a 1 fixed angle between the post and thelever is maintained including a fiat surface on the ost engaging acomplemental surface on the j' ever.

5. In a shearing machine, the combina-f tion with a casing, a guard@late, and a i cutter movable on the guard-p ate, of a. vi' a brntorylever operating said cutter, apost ex-l ."pf' through an apertureIntennediatfno .i v rA the ends of the lever, and having bearing in theupper and lower walls of tbe casing, and a tension device 'actingthrough said post to press the cutter on said guard-plate, said postbeing provided with two vertically separated bearing surfaces orshoulders, one made flat and facing forwardly, and the other sphericaland fac-ing downwardly adapted to engage conlpleinental bearing surfaceson said lever.

6. In a shearing machine, the combination with a casing, a'guardlate,and a cutter movable on the guard-p ate, of a vibratorv lever operatingsaid cutter, a post extending through an aperture intermediate the endsof the lever, and having bearing in the upper and lower walls of thecasing, a tension dcvice acting through said post to press the cutter onsaid guard-plate, said post having a downwardly facing spherical bearingsurface engagirw a com lexuental bearing surface in said lever amprovided with a ilattened, forwardly facing surface designed to engage alike flattened surface on the lever between said post and cutter.

7. As a new article of manufacture, a )ivot post for the vibratorycutter lever of a shearlng machine, comprising upper and lower cylindricbearing portions, a downwardly facing spherical bearing, and alaterali)v facing shoulder or flattened surface. on the ost verticallyseparated from the spherical earing surface.

8. As anew article of manufacture, a ivot post for the vibrator),rcutter lever of a s learmg machine, comprising upper and lower cylindricbearing portions, a downwardly facing s )herical bearing surface, and aflange verticali)r separated from said spherical sur face. provided witha flattened surface, for the purpose set forth.

9. In a shearing machine, the combinai tion with a casing, aguard-plate, and a entf ter movable on the 'guard-piatte, of a'vibratory lever for operating the cutter, a post extending through an aerture in and nonrotatively engaging sai( lever and having rotativebearing in the upper and lower walls of the casing, means for vibratingsaid lever, a tension device acting through the post on the vibratorylever for pressing the cutter against the guard-plate, anda springsurrounding the post and interposed between the vibratory lever andlower wall of the casing for the purpose set forth.

10. In a shearing machine, the combination with a casing, a guard-plateand a cutter movable on said guard-plate, of a vibratory lever foroperatingl said cutter, a. tension device acting through said lever topress the cutter on the guard-plate, a spring device interposed betweensaid cutter and the forward end of the vibratory lever, and screws orstuds extending do'vvnwardbr from the lever and provided with downwardlyfacing shoulders opposing upwardly facing shoulders on the spring deviceand provided also with extensions adapted to engage registering openingsin the cutter.

11. In a shearing Inaebine, the combination with a casing, a guardlateand a cutter movable on said guard-p ate, of a vibratory lever foroperating said cutter and capable of a rocking movement, a tensiondevice acting through said lever to press the cutter on the guard-piate,a spring device interposed between said cutter and the forward end ofthe vihratory lever, andscrews or studs extending downwardly from thelevel' and provided with downwardly facing round-- ed s iouldersopposing like upwardly facing shoulders on the spring device andprovided also with extensions adapted to engage regI` istering openingsin the cutter, said lever and plate being spaced apart for the purposeset orth.

l2. In a shearing machine, the combination with the vibrator)r cutterlever and its cutter, of a spring device interposed between the cutterand lever, screws or studs extending dowx'iwardly from the lever andengaging openings in the spring device, said screws -or studs having.downwardly facing rounded shoulders engaging complemental shoulders onthe spring device.

In testimony, that I claim the foregoing as my invention I aflix mysignature in the presence of two witnesses, this. 25th day of AugustA.D. 1906. f

CHESTER M. PALMER.

"itnessesz E. J. PoLLocK,

WALTER S. FnAzmn.

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